fix: Support notification builder and permission check for Android 8 and below

android_notify/core.py

@@ -126,7 +126,13 @@ def send_notification(
         notification_manager.createNotificationChannel(channel)
 
     # Build the notification
-    builder = NotificationCompatBuilder(context, channel_id)
+    if BuildVersion.SDK_INT >= 26:
+        builder = NotificationCompatBuilder(context, channel_id)
+    else:
+        # Before Android 8.0 the platform Notification$Builder only has the
+        # (Context) constructor; the (Context, String channelId) overload
+        # requires API 26+. The androidx Builder accepts both forms on all APIs.
+        builder = NotificationCompatBuilder(context)
     builder.setContentTitle(title)
     builder.setContentText(message)
     insert_app_icon(builder, custom_app_icon_path)

android_notify/internal/permissions.py

@@ -13,11 +13,19 @@
 def check_notification_permission_legacy_android12_below():
     # Below Android 13 there is no POST_NOTIFICATIONS runtime permission
     # so check the per-app notification enabled state instead.
+    if BuildVersion.SDK_INT < 24:
+        # NotificationManager.areNotificationsEnabled() only exists on API 24+
+        # (before that there is no per-app notification toggle -> always on).
+        return True
     context = get_python_activity_context()
     notification_service = context.getSystemService(Context.NOTIFICATION_SERVICE)
     return notification_service.areNotificationsEnabled()
 
 def check_notification_permission_androidx_android12_below():
+    if BuildVersion.SDK_INT < 24:
+        # NotificationManagerCompat.areNotificationsEnabled() delegates to the
+        # platform API-24+ method; before that notifications are always enabled.
+        return True
     context = get_python_activity_context()
     func_from = getattr(NotificationManagerCompat, "from")
     compat_manager = func_from(context)

android_notify/sword.py

@@ -109,7 +109,13 @@ def __init__(self, **kwargs):  # @dataclass already does work
 
         self.notification_manager = get_notification_manager()
         context = get_python_activity_context()
-        self.builder = NotificationCompatBuilder(context, self.channel_id)
+        if BuildVersion.SDK_INT >= 26:
+            self.builder = NotificationCompatBuilder(context, self.channel_id)
+        else:
+            # Before Android 8.0 the platform Notification$Builder only has the
+            # (Context) constructor; the (Context, String channelId) overload
+            # requires API 26+.
+            self.builder = NotificationCompatBuilder(context)
 
     def setData(self, data_object:dict):
         """